TIM? sounds like Thermal paste you apply between chip ( CPU and GPU) and heat sink

16:9 became mainstream due to HD movies, but most gamers will go with 1920X1200 16:10
and there is no better.. is what ever you decide you like the most, is nice having extra 120 vertical pixels with 16:10, you get a taller monitorEdited by Danker16 - 2/9/10 at 4:31pm

Both would be able to run 1080p resolutions, but the 16:10 monitor would either stretch the image, or display the image in its original format with the addition of black bars on the top and bottom (accounting for the extra lines gained from 1080 -> 1200).

TIM = Thermal Interface Material. It's the thermal grease/paste used between the chip and the heatsink.